Preventative maintenance is key. Do your oil changes on time, if not sooner. Change brakes right before they need to be changed, not after they should have been. Ensure all of you're fluids are clean and well topped up, if not, top them up or flush them with dealership approved fluids. Inspect all rubber hoses, and belts. All electrical connections you can see as well. One huge, huge, thing - Clean the car regularly. Don't let dirt and salt sit on the paint, or stick to the underbody. Remember, there are lines running from front to rear underneath the vehicle, these can and will get damaged if not maintained properly either. Lubricate hinges, clean nooks and crannies like around the fuel filler, door jambs, etc.
If you do these things regularly, it won't seem like a hassle and will save you tons of money in the long run (paying for repairs wise, and resale value wise)